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 National Instruments Corporation

3

NI 6110/6111/6115/6120 Calibration Procedure

Documentation and Software

The following documentation and software are required to calibrate the 
NI 6110/6111/6115/6120: 

The latest version of NI-DAQ. You can download this from 

ni.com

 

by clicking 

Download Software

.

niECal.dll

niECal.lib

, and 

niECal.h

 files, available from 

ni.com/calibration

 by clicking 

Manual Calibration 

Procedures

.

NI-DAQ User Manual for PC Compatibles, 

available from 

ni.com/manuals

.

You also need the 

NI-DAQ Function Reference Help

, which is installed 

with NI-DAQ. To access this file, go to 

Start»Programs»National 

Instruments»NI-DAQ»NI-DAQ Help

.

Documentation

The 

NI-DAQ Function Reference Help

 and the 

NI-DAQ User Manual for 

PC Compatibles

 contain information on using NI-DAQ. The function 

reference file includes detailed information on the functions in the driver. 
The user manual provides instructions on installing and configuring 
National Instruments DAQ devices and describes how to create 
applications that use NI-DAQ. These documents are your primary 
references for writing a calibration utility. For more information on the 
products you are calibrating, refer to the device user manuals.

Software

NI-DAQ supports a number of programming languages, including 
LabVIEW, Measurement Studio, Microsoft Visual C++, Microsoft Visual 
Basic, and Borland C++. When you install NI-DAQ, install support for the 
programming language you are using.

The 

niECal.dll

niECal.lib

, and 

niECal.h

 files provide calibration 

functions that are not provided by NI-DAQ. These functions include 
protecting the calibration constants and updating the calibration date. 
You can access the functions in this 

.dll

 through any 32-bit compiler.

Writing Your Calibration Procedure

The calibration process is described in the 

Calibration Process

 section. The 

description includes step-by-step instructions on calling the appropriate 
calibration functions. Unless otherwise specified, the calibration functions 
are C function calls in NI-DAQ. These function calls are also valid for 
Visual Basic programs. While LabVIEW virtual instruments (VIs) are not 
discussed, the translation from NI-DAQ function calls to LabVIEW VIs is 

Summary of Contents for NI 6110

Page 1: ...PXI 6120...

Page 2: ...equipment software calibration functions and environment needed for calibration Calibration Process This section provides step by step instructions for verifying and calibrating your device NI 6110 6...

Page 3: ...often you should calibrate the device NI recommends performing a complete calibration at least once every year You can shorten this interval based on the demands of your application Equipment and Oth...

Page 4: ...o create applications that use NI DAQ These documents are your primary references for writing a calibration utility For more information on the products you are calibrating refer to the device user ma...

Page 5: ...connections and test conditions during calibration use the following guidelines Keep connections to the device as short as possible Long cables and wires can act as antennae picking up extra noise tha...

Page 6: ...re These flowcharts only refer to the appropriate NI DAQ function calls You may want to refer to the Calibration Process section to the NI DAQ Function Reference Help and to the NI DAQ User Manual for...

Page 7: ...able for the product determine the channel output polarity and voltage to verify AO_VWrite deviceNumber chan voltage GPCTR_Control deviceNumber chan ND_RESET GPCTR_Set_Application deviceNumber chan ND...

Page 8: ...rocedure describes how to configure a device with NI DAQ 1 Install NI DAQ The latest version is available at ni com 2 Power off the computer and install the device in an available slot 3 Power on the...

Page 9: ...on Note Calibrator connections depend on the channel you are verifying The verification process requires you to individually test each channel 2 Use the following guide to determine the connections be...

Page 10: ...l AI_Configure to inform NI DAQ of the input mode input range and input polarity selected for the device Set the following parameters deviceNumber The value obtained from MAX chan The channel currentl...

Page 11: ...values 11 Make the appropriate connections to verify the next channel by repeating steps 2 and 3 and proceed from step 4 You have completed verifying the analog input levels on the device Verifying A...

Page 12: ...and lower limits on the data sheet If the value falls between these limits the device has passed this test 7 Repeat steps 4 6 to test all values 8 Disconnect the DMM from DAC0OUT and reconnect it to D...

Page 13: ...umber The value obtained from MAX gpctrNum 0 paramID ND_COUNT_2 paramValue 2 6 Call Select_Signal to route the counter signal to the GPCTR0_OUT pin on the device connector Set the following parameters...

Page 14: ...input channel 0 pin 68 3 Connect the negative output of the calibrator to analog input channel 0 pin 34 and to ACH0GND pin 67 4 Call Get_Cal_Date to obtain the date of the last calibration The functio...

Page 15: ...output operation To do this repeat the procedure in the Verifying the Performance of the NI 6110 6111 6115 6120 section NI 6110 6111 6115 6120 Specifications The tables in this section contain the sp...

Page 16: ...or output to verify performance This value is divided into two columns Location and Value Location refers to where the test value fits within the test range Pos FS is positive full scale and Neg FS i...

Page 17: ...8951 9 9050 9 8950 5 Bipolar 2 PosFS 4 95000 4 94741 4 95259 4 94734 4 95266 5 Bipolar 2 Zero 0 0000 0 00083 0 00083 0 00083 0 00083 5 Bipolar 2 NegFS 4 95000 4 95259 4 94741 4 95266 4 94734 2 Bipolar...

Page 18: ...800 41 3995 41 7605 41 3987 41 7613 42 Bipolar 0 2 Zero 0 0000 0 0366 0 0366 0 0366 0 0366 42 Bipolar 0 2 NegFS 41 5800 41 7605 41 3995 41 7613 41 3987 20 Bipolar 0 5 PosFS 19 8000 19 7319 19 8681 19...

Page 19: ...ipolar Zero 0 000000 0 008900 0 008900 0 008900 0 008900 20 Bipolar NegFS 9 990000 10 003266 9 976734 10 003435 9 976565 Table 10 Counter Values for the NI 6115 Counter Values Set Point MHz Lower Limi...

Page 20: ...03 0 008303 0 008303 1 Bipolar 10 NegFS 0 990000 0 999859 0 980141 0 999876 0 980124 0 5 Bipolar 20 PosFS 0 4950000 0 485919 0 504081 0 485911 0 504089 0 5 Bipolar 20 Zero 0 000000 0 008303 0 008303 0...

Page 21: ...NI 6110 6111 6115 6120 Calibration Procedure 20 ni com Table 13 Counter Values for the NI 6120 Counter Values Set Point MHz Upper Limit MHz Lower Limit MHz 5 4 9995 5 0005...

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